From mboxrd@z Thu Jan  1 00:00:00 1970
From: Florian Westphal <fw@strlen.de>
Subject: Re: libnetfilter_conntrack: ABI breakage error
Date: Sat, 22 May 2021 13:14:51 +0200
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To: Psyspy 22 <psyspy2020@gmail.com>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>, netfilter@vger.kernel.org

Psyspy 22 <psyspy2020@gmail.com> wrote:
> Hello Pablo,
> 
> I cross compiled the application. Host/Build: Ubuntu 20,10, x86_64.
> Target machine: aarch64, Linux kernel: 4.1.

4.1?  There is no synproxy support in that version.

Are you passing unitialised garbage data to the library by mistake?